Demolishing pick



Oct. 25, 1932. G, GAR-rm 1,884,653

DEMOLISHING PICK Filed May 27, 19250 MA-MM Patented Oct. 25, 1932 UNITED STATES PATENT OFFICE ELMER G. GARTIN, F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS DEMOLISI-IING PICK Application filed May 27,

This invention relates to an improved method of and means for breaking up material or otherwise working the same, and has particular reference to improved means 3f for supporting a power operated tool preterably of the pneumatic hammer operated type.

In certain types of work, such for instance as the demolition of a wall, whether of brick, concrete or other material, it is frequently essential for the workman to support the demolition tool from a position above the point where the tool is being applied. In the case of a substantial wall made of, say, brick, it is usual for the workman to either stand on top of the wall and swing a pick into the side thereof or hold any other type of tool, such as of the fluid actuated hammer motor type, against the wall. In either case, there are certain attendant dangers due to the necessity of the workman exerting some effort to either hold or move the tool, which effort may tend to unbalance him whereupon he might be precipitated from the top of the wall or scaffolding and hence possibly subjected to severe injury.

It is an object of my invention to provide improved means whereby a workman may operate a suitable tool, preferably of the fluid pressure actuated hammer type, without being confronted with the degree of danger whichaccompanies the present methods. A further object is to provide an improved support whereby a certain leverage may be obtained for moving the tool inwardly against the wall and to have the arrangement adapted for various degrees of adjustment if desired. More specifically an object of my invention is to provide a supplemental handle pivotally connected to an intermediate point of the tool handle which is normally rigidly connected to the tool and to have this supplemental handle provided with suitable grasping means whereby it may be held closely to the body of the operator while the tool handle is moved outwardly away from the operator thereby causing the tool to swing about the pivot of the supplemental handle into engagement with the wall at a point below the operator.

Other objects and advantages and modifi- 1930. Serial No. 456,213.

cations of my improved arrangement will be more readily understood and appreciated by those skilled in the art from the following description of the accompanying drawing in which,-

Fig. 1 is a side elevation of my improved device with certain details shown in section.

Fig. 2 is an enlarged partial sectional view of the grasping portion of the supplemental support.

Fig. 3 is an enlarged transverse section of the pivotal joint taken on line 3-3 of Fig. 1.

In the illustrative embodiment of my invention I have shown for purpose of illustration one form of tool which might be used. It comprises generally a pneumatic motor 1 carrying a pick 2 which, in the specific embodiment herein shown, is of elongated formation and is bent upwardly, thereby facilitatingnot only penetration of the material but also helping to resist any tendency for the tool to drop downwardly away from the operator who may be standing upon the top of the wall, undergoing demolition, or on a scaffold. The hammer motor 1 is provided with a preferably rigid hollow handle 3, the upper end of which carries a rotatable valve control sleeve 4. The motor 1 is supplied with pressure fluid through a usual flexible hose 5.

. To assist the workman in holding the tool and also in moving the same into the wall, a supplemental support or handle 6 is pivotally connected as at 7 to a bracket 8 which surrounds and is adj ustably clamped to the rigid support or handle 3 as by a nut 9. The length of the supplemental handle is also adjustable in that a plurality of telescopic portions 10 and 11 are connected by a pin 12 which is insertable through any one of a series of holes 13. The upper end of the supplemental handle is provided with a hand grasping portion lat which in operation the workman would hold with one hand next his body,

preferably theabdomen, and with the other hand grasp and move outwardly the valve controlling sleeve 4 thus causing the tool to swing about the pivot 7 and into engagement with the wall or other object to be worked.

, upon, it being understood that the workman during this operation is standing at a point above the tool as previously described. It is also seen that if it is desired to swing the tool back and forth against the wall, such operation may be readily effected merely by moving the upper end of the handle 8 inwardly and outwardly with respect to the workman. In order to obtain various dcgrees of efiectiveness depending upon the particular material operated upon or the'conditions under which the tool is being used, the I bracket 8 may be adjusted upwardly but preferably not above the midway pointsuch as generally indicated indotted lines in Fig; 1. In this position it is seen that possibly the most effective leverage action may be obtained. v

While there is in this application specifically described one form which the invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

hat I claim as new and-desire to secure by Letters Patent is: r

1. In combination, a tool, an actuating motor therefor, and supporting means therefor including a manual graspinghandle extending at substantially rightangles to the axis of the tool, and a second handle swing-, able relative to the first handle and to the tool, the weight of the tool being wholly supported by the operator by said handles.

2. In combination, atool, an actuating motor therefor, and supporting means therefor including a manual grasping handle extending at substantially right angles to the axis of the tool, and a second handle swingable relative to the first handle and to the tool in a plane determined by the first handle and the point of the tool, the weight of the tool being wholly supported by the operator by said handles.

3. In combination, a tool, an actuating motor therefor, and supporting means therefor including a manual grasping handle extending at substantially right angles to the axis of the tool, and a second handle swingable relative to the first handle and to the tool about an axis adjacent the tool, the

weight of the tool being wholly supported by the operator by said handles.

4. In combination, a tool, an actuating motor therefor, and supporting means therefor including a manual grasping handle extending at substantially right angles to the axis of the tool, and a second handle'swingable relative to the first handle and to the tool about an axis variably positionable along the first handle, the weight of the tool being wholly supported by the operator by said handles.

the tool being wholly supported by the operator by said handles. 7 i

6. In combination, a tool, an actuating motor therefor, and supporting means including a pair of grasping handles relative to one of which said tool is movable arcuately, the other of said handles connected to said tool to effect such arcuate movement thereof on angular movement relative to the first handle, said tool being arranged substantial-z ly tangential to its path of arcuate movement. i

7. In combination, a tool, and supporting means therefor including a manual grasping handle extending at substantially right angles to the axis of the tool, and asecond handle swingable relative to the first handle and to the tool, the weight of the tool being wholly supported by the operator by said handles i j 8. In combination, a tool, and supporting means therefor including a manual grasping handle extending at substantially right angles to the axis of the tool, and a second handleswingable relative to the first handle and to the tool While the operators grasp on said handle is maintained, the weight of the tool being wholly supported by the operator by said handles during operation of the tool. 9. In combination, a tool, an actuating motor therefor, an elongated supporting element extending at substantially right angles to the axis of the tool and having attached thereto a pair of grasping handles, one of said handles being substantially in advance of the other in planes parallel to the axis of the tool whereby an axial force maybe transmitted to the latter, and the'weight of the tool being wholly supported by the operatolr by said handles during operation of the too In testimony whereof I, aflix my signature.

ELMER G. GARTIN. 

